Snap-switch.



G. HORN.,

SNAP SWITCH.

APPLICATION HLBD 00T.1s, 1913.

Patented Mar. 30, 1915.

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specification of Letters Patent.

Patented llllarglll, 19115..

Application fled butcher 1t, 191%. Aerial 11o. 791,761

To all 'whom t may concern;

lBe it lniown that l, @Hannes HORN,- a citizen of the United States, -residing at Millhourne, Delaware county, Pennsylvania,

`have invented certain Improvements in Snap-Switches, of which the following is a specification.

lll/ly inventionnis asnapY switch having a fulcrumed switch blade `with a cam lined thereto, in combination with a fulcruined lever provided with a spring coperating with the-cam, whereby the switch blade is automatically thrown vinto and out of engagement with terminals when the lever'is rocked through a definite are past the center of oscillation of the bar and cam.

rllie primary object of the invention is'to provide a simple, compact and inexpensive construction that is positive and reliable in action and has a minimum tendency to arciiglhe characteristic improvements will more fully appear from the following description and the accompanying drawings in illustration thereof.

lln the drawings, l"igure 1 is a sectional view taken through il wall receptacle containin my improved switch, the section being ta en on the line 1-1 of 1F ig. 2; lFig. 2 is a sectional view taken on the-line 2 2 of ig. 1; Fig. 3 is a sectional view taken onthe line 3-3 of Figi; and Figa is a perspective view of detached details ofconstruction.

As shown in the drawings, the wall 1 is provided with a recess 2 containing the receptacle 3.

A bracket 4, preferablystamped out of sheet metal and comprising the bearings t@ and 1b, is secured within the receptacle 3, to the base 3 thereof, by screws 5 passing through such base 3 and hearings t.

A switch blade 6, which may` be stamped out of sheet metal, is xed to a bearing 7 having thereon an arbor 8 which is journaled in one of the members 1b, the parts 6 and 7 being electricall separated by the insulation 9. A curve bearing or cam 10, containing the longitudinal slot 10, is supported by the 1bearing 7 and a bearing 7, the latter being connected with a bearing t by an arbor 8u.'

A sheet metal bar 11, whichis fixed to the receptacle 3 by screws 12 (set in the lugs 31 thereof) and to the wall by screws 13, is provided with the bearings 11 and contains a slot 11".. A lever 11 passes throu the slot 11b into the slot 10a and is fulcrumed on the bearings 11 by the pin 15.

A coiled spring 16 is disposed on the lever 14e, between the shoulder 14a thereof and a curved bearing 17, containing a slot 17a ,Y

through which the lever passes, the bearing 17 riding on the inner surface of the cam or bearing 10 and moving on the lever.

Sheet brass plates 18 are fixed inthe face of the receptacle 3 by screws 19, and therespective plates have secured thereto the bent sheet metal phosphor bronze terminals 20 and 21, which are provided with the respective blades 20aand 21a for engaging the re# spective ends of the bar 6, the terminals being yoke like in construction.

'llhe plates 18 are connected, by binding screws 22, with the respective wires 23, the wires being held on the screws by lugs 18a formed on the plates and bent over theloops 23a of the wires.

llt will be understood that with the lever 1d in the position illustrated in lFig. 1, the blade is out of contact-with the blades 20a and 21a. When, however, the lever 11 is pushed in the direction of the arrow, the bearing 17 will slide on the cam or bearing 1Q and compress the spring 16 until the anis Aof oscillation of the cam has been passed,

when the spring will throw the cam 1@ Aand blade ti so that the ends of the latter will engage between the respective blades 20a and 21a and close the circuit. Having described my invention, ll claim: 1. A switch having a terminal, a fulcrumed switch blade, a bearing connected with said blade and extending across the fulcruin thereof, a lever havinga bearing engaging said first named bearin and a coiled spring on said lever an acting against said second named bearing for throwing said blade, said lever being fulcrumed eccentrically to the fulcrum of said blade.

.approaching closest at its median point to the fulcr of said blade, and a lever ful.-

A ttt 2. A switch having a terminal, a 'cruined switch blade, a bearing connected crumed eccentrically to said blade and movable over said surface toV rock said blade.

. 4. A switch having a terminal, a fulcrumed switch blade, a lever, a bearing connected with said blade and having members engaging an end of said leverbetween them,

said lever and engaging said device forA throwing said bearing and blade.

6. A switch comprising, in combination with a' receptacle, bearing means fixed inv said receptacle, a pair of terminals Afixed in said receptacle, a switch blade fulcrumed on vso said bearing means, bearing means' comprising a slotted member fixed to said blade, 'a

bearin device fixed to said receptacle, a lever lcrumed on said device and movable in the slot of said member, and a coiled spring onsaid lever, said spring having' a bearing movable on said member, whereby said member compresses said spring in the movement of said lever rom the normal position to a point beyond the axis of oscil-A 'lation of said blade and said spring then throws-said member and blade.

"Z. A switch having, in combination with l a receptacle, a bracket having a bearing fixed to the bottom of said-receptacle and bearings extending transversely thereto, a switch blade ulcrumed on said bearings second named, la curved member fixed 4to said blade eccentrically to its axis of oscillation, a bearing device fixed to said receptacle, a lever ulcrumed on said device so as to oscillate across the axis of said blade, a coiled spring disposed on said lever between a bearing thereon and a movable bearing on said member, and terminals fixed in said receptacle, each terminal having blades for frictionally engaging respective ends of said switch blade.

8. A switch having, in combination with a receptacle, a bracket having a bearing engaged to said receptacle, a switch blade fulcrumed on said bracket, a bearing iixed to and insulated from said blade, a bearing device fixed to said receptacle, a lever fulcrumed on said device so as to be oscillatable across the axis of oscillation of said conductor, a spring on said lever movable across said axis of oscillation whereby said second bearing is rocked, and terminals of diiierent lengths fixed to said receptacle in positions to be engaged and disengaged by said blade in diii'erent positions thereof induced by the movement of said member.

In testimony whereof, Ihave hereunto set my name this 11th day of October, 1913, in the presence of the subscribing witnesses.

CHARLES HORN.

Witnesses:

Jos. Gr. DENNY, Jr., C. N. BUTLER. 

